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Trim trailing spaces

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This eliminates most luacheck formatting warnings
This commit is contained in:
Treer 2020-01-08 21:37:31 +11:00 committed by SmallJoker
parent d0ce9dd633
commit 58da96549a
4 changed files with 96 additions and 96 deletions
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8
init.lua
View File

@ -24,13 +24,13 @@ if minetest.get_translator ~= nil then
S = minetest.get_translator("nether")
else
-- mock the translator function for MT 0.4
S = function(str, ...)
S = function(str, ...)
local args={...}
return str:gsub(
"@%d+",
function(match) return args[tonumber(match:sub(2))] end
)
end
end
end
-- Global Nether namespace
@ -131,7 +131,7 @@ if nether.NETHER_REALM_ENABLED then
local existing_portal_location, existing_portal_orientation = nether.find_nearest_working_portal("nether_portal", destination_pos, 8 * nether.FASTTRAVEL_FACTOR, 0)
if existing_portal_location ~= nil then
return existing_portal_location, existing_portal_orientation
else
else
destination_pos.y = nether.find_surface_target_y(destination_pos.x, destination_pos.z, "nether_portal")
return destination_pos
end
@ -166,6 +166,6 @@ if nether.NETHER_REALM_ENABLED then
})
end
})
end

2
nodes.lua
View File

@ -27,7 +27,7 @@ nether.register_wormhole_node("nether:portal", {
description = S("Nether Portal"),
post_effect_color = {
-- post_effect_color can't be changed dynamically in Minetest like the portal colour is.
-- If you need a different post_effect_color then use register_wormhole_node to create
-- If you need a different post_effect_color then use register_wormhole_node to create
-- another wormhole node and set it as the wormhole_node_name in your portaldef.
-- Hopefully this colour is close enough to magenta to work with the traditional magenta
-- portals, close enough to red to work for a red portal, and also close enough to red to

134
portal_api.lua
View File

@ -42,8 +42,8 @@ nether.portals_palette = {
}
if minetest.get_mod_storage == nil then
error(nether.modname .. " does not support Minetest versions earlier than 0.4.16", 0)
if minetest.get_mod_storage == nil then
error(nether.modname .. " does not support Minetest versions earlier than 0.4.16", 0)
end
--[[
@ -57,20 +57,20 @@ p1 & p2 p1 and p2 is the system used by earlier versions of the nether mod
they define the bounding volume for the portal.
The value of p1 and p2 is kept in the metadata of every node in the portal
WormholePos The location of the node that a portal's target is set to, and a player is teleported
WormholePos The location of the node that a portal's target is set to, and a player is teleported
to. It can also be used to test whether a portal is active.
AnchorPos Introduced by the portal_api. Coordinates for portals are normally given in terms of
AnchorPos Introduced by the portal_api. Coordinates for portals are normally given in terms of
the AnchorPos. The AnchorPos does not change with portal orientation - portals rotate
around the AnchorPos. Ideally an AnchorPos would be near the bottom center of a portal
shape, but this is not the case with PortalShape_Traditional to keep comptaibility with
shape, but this is not the case with PortalShape_Traditional to keep comptaibility with
earlier versions of the nether mod.
Usually an orientation is required with an AnchorPos.
Orientation is yaw, either 0 or 90, 0 meaning a portal that faces north/south - i.e. obsidian
Orientation is yaw, either 0 or 90, 0 meaning a portal that faces north/south - i.e. obsidian
running east/west.
TimerPos The portal_api replaces ABMs with a single node timer per portal, and the TimerPos is the
TimerPos The portal_api replaces ABMs with a single node timer per portal, and the TimerPos is the
node in which that timer is located. Extra metadata is also kept in the TimerPos node.
@ -78,7 +78,7 @@ Portal shapes
=============
For the PortalShape_Traditional implementation, p1, p2, anchorPos, wormholdPos and TimerPos are defined
For the PortalShape_Traditional implementation, p1, p2, anchorPos, wormholdPos and TimerPos are defined
as follows:
.
+--------+--------+--------+--------+
@ -351,9 +351,9 @@ nether.PortalShape_Circular = {
local zRange = 0
if orientation ~= 0 then
xRange = 0
zRange = 2
zRange = 2
end
local xEdge, yEdge, zEdge
local pos = {}
for x = -xRange, xRange do
@ -363,7 +363,7 @@ nether.PortalShape_Circular = {
zEdge = z == -zRange or z == zRange
pos.z = anchorPos.z + z
for y = 1, 5 do
yEdge = y == 1 or y == 5
yEdge = y == 1 or y == 5
if not (yEdge and xEdge and zEdge) then
pos.y = anchorPos.y + y
if func(pos) then
@ -542,7 +542,7 @@ local function get_colorfacedir_from_color_and_orientation(color, orientation, p
axis_direction = 0 -- 0 is up, or +Y
rotation = dir
end
-- wormhole nodes have a paramtype2 of colorfacedir, which means the
-- high 3 bits are palette, followed by 3 direction bits and 2 rotation bits.
-- We set the palette bits and rotation
@ -576,8 +576,8 @@ local function get_orientation_from_colorfacedir(param2)
end
end
-- We want wormhole nodes to only emit mesecon energy orthogonally to the
-- wormhole surface so that the wormhole will not send power to the frame,
-- We want wormhole nodes to only emit mesecon energy orthogonally to the
-- wormhole surface so that the wormhole will not send power to the frame,
-- this allows the portal frame to listen for mesecon energy from external switches/wires etc.
function get_mesecon_emission_rules_from_colorfacedir(param2)
@ -647,9 +647,9 @@ end
-- Add portal information to mod storage, so new portals may find existing portals near the target location.
-- Do this whenever a portal is created or changes its ignition state
local function store_portal_location_info(portal_name, anchorPos, orientation, ignited)
if not DEBUG_IGNORE_MODSTORAGE then
if not DEBUG_IGNORE_MODSTORAGE then
mod_storage:set_string(
minetest.pos_to_string(anchorPos) .. " is " .. portal_name,
minetest.pos_to_string(anchorPos) .. " is " .. portal_name,
minetest.serialize({orientation = orientation, active = ignited})
)
end
@ -658,7 +658,7 @@ end
-- Remove portal information from mod storage.
-- Do this if a portal frame is destroyed such that it cannot be ignited anymore.
local function remove_portal_location_info(portal_name, anchorPos)
if not DEBUG_IGNORE_MODSTORAGE then
if not DEBUG_IGNORE_MODSTORAGE then
mod_storage:set_string(minetest.pos_to_string(anchorPos) .. " is " .. portal_name, "")
end
end
@ -677,7 +677,7 @@ local function list_closest_portals(portal_definition, anchorPos, distance_limit
local result = {}
if not DEBUG_IGNORE_MODSTORAGE then
if not DEBUG_IGNORE_MODSTORAGE then
local isRealm = portal_definition.is_within_realm(anchorPos)
if distance_limit == nil then distance_limit = -1 end
@ -685,7 +685,7 @@ local function list_closest_portals(portal_definition, anchorPos, distance_limit
for key, value in pairs(mod_storage:to_table().fields) do
local closingBrace = key:find(")", 6, true)
if closingBrace ~= nil then
if closingBrace ~= nil then
local found_anchorPos = minetest.string_to_pos(key:sub(0, closingBrace))
if found_anchorPos ~= nil and portal_definition.is_within_realm(found_anchorPos) == isRealm then
local found_name = key:sub(closingBrace + 5)
@ -721,7 +721,7 @@ function ambient_sound_play(portal_definition, soundPos, timerNodeMeta)
-- Using "os.time() % soundLength == 0" is lightweight but means delayed starts, so trying a stored lastPlayed
if os.time() >= lastPlayed + soundLength then
local soundHandle = minetest.sound_play(portal_definition.sounds.ambient, {pos = soundPos, max_hear_distance = 8})
if timerNodeMeta ~= nil then
if timerNodeMeta ~= nil then
timerNodeMeta:set_int("ambient_sound_handle", soundHandle)
timerNodeMeta:set_int("ambient_sound_last_played", os.time())
end
@ -735,7 +735,7 @@ function ambient_sound_stop(timerNodeMeta)
if timerNodeMeta ~= nil then
local soundHandle = timerNodeMeta:get_int("ambient_sound_handle")
minetest.sound_fade(soundHandle, -3, 0)
-- clear the metadata
timerNodeMeta:set_string("ambient_sound_handle", "")
timerNodeMeta:set_string("ambient_sound_last_played", "")
@ -763,7 +763,7 @@ function extinguish_portal(pos, node_name, frame_was_destroyed)
minetest.log("error", "extinguish_portal() invoked on " .. node_name .. " but no registered portal is constructed from " .. node_name)
return -- no portal frames are made from this type of node
end
if portal_definition.sounds.extinguish ~= nil then
minetest.sound_play(portal_definition.sounds.extinguish, {pos = p1})
end
@ -775,7 +775,7 @@ function extinguish_portal(pos, node_name, frame_was_destroyed)
-- update the ignition state in the portal location info
local anchorPos, orientation = portal_definition.shape.get_anchorPos_and_orientation_from_p1_and_p2(p1, p2)
if frame_was_destroyed then
if frame_was_destroyed then
remove_portal_location_info(portal_definition.name, anchorPos)
else
store_portal_location_info(portal_definition.name, anchorPos, orientation, false)
@ -807,10 +807,10 @@ function extinguish_portal(pos, node_name, frame_was_destroyed)
if target ~= nil then
if DEBUG then minetest.chat_send_all(" attempting to also extinguish target with wormholePos " .. minetest.pos_to_string(target)) end
extinguish_portal(target, node_name)
extinguish_portal(target, node_name)
end
if portal_definition.on_extinguish ~= nil then
if portal_definition.on_extinguish ~= nil then
portal_definition.on_extinguish(portal_definition, anchorPos, orientation)
end
end
@ -987,7 +987,7 @@ local function build_portal(portal_definition, anchorPos, orientation, destinati
portal_definition.schematic_filename,
orientation,
{ -- node replacements
["default:obsidian"] = portal_definition.frame_node_name,
["default:obsidian"] = portal_definition.frame_node_name,
["nether:portal"] = portal_definition.wormhole_node_name
},
true
@ -998,7 +998,7 @@ local function build_portal(portal_definition, anchorPos, orientation, destinati
param2 = get_colorfacedir_from_color_and_orientation(portal_definition.wormhole_node_color, orientation, portal_definition.shape.is_horizontal)
}
portal_definition.shape.apply_func_to_wormhole_nodes(
anchorPos,
anchorPos,
orientation,
function(pos) minetest.swap_node(pos, wormholeNode) end
)
@ -1042,7 +1042,7 @@ end
-- Used to find or build the remote twin after a portal is opened.
-- If a portal is found that is already lit then it will be extinguished first and its destination_wormholePos updated,
-- this is to enforce that portals only link together in mutual pairs. It would be better for gameplay if I didn't apply
-- that restriction, but it would require maintaining an accurate list of every portal that links to a portal so they
-- that restriction, but it would require maintaining an accurate list of every portal that links to a portal so they
-- could be updated if the portal is destroyed. To keep the code simple I'm going to limit portals to only being the
-- destination of one lit portal at a time.
-- * suggested_wormholePos indicates where the portal should be built - note this not an anchorPos!
@ -1112,22 +1112,22 @@ local function ignite_portal(ignition_pos, ignition_node_name)
if meta ~= nil then
local p1, p2, target = meta:get_string("p1"), meta:get_string("p2"), meta:get_string("target")
if p1 == "" or p2 == "" or target == "" then
-- metadata is missing, the portal frame node must have been removed without calling
-- metadata is missing, the portal frame node must have been removed without calling
-- on_destruct - perhaps by an ABM, then replaced - presumably by a player.
-- allowing reigniting will repair the portal
if DEBUG then minetest.chat_send_all("Broken portal detected, allowing reignition/repair") end
repair = true
else
else
if DEBUG then minetest.chat_send_all("This portal links to " .. meta:get_string("target") .. ". p1=" .. meta:get_string("p1") .. " p2=" .. meta:get_string("p2")) end
-- Check the portal's timer is running, and fix if it's not.
-- A portal's timer can stop running if the game is played without that portal type being
-- A portal's timer can stop running if the game is played without that portal type being
-- registered, e.g. enabling one of the example portals then later disabling it, then enabling it again.
-- (if this is a frequent problem, then change the value of "run_at_every_load" in the lbm)
local timer = minetest.get_node_timer(get_timerPos_from_p1_and_p2(minetest.string_to_pos(p1), minetest.string_to_pos(p2)))
if timer ~= nil and timer:get_timeout() == 0 then
if DEBUG then minetest.chat_send_all("Portal timer was not running: restarting the timer.") end
timer:start(1)
timer:start(1)
end
end
end
@ -1145,7 +1145,7 @@ local function ignite_portal(ignition_pos, ignition_node_name)
end
if DEBUG and destination_orientation == nil then minetest.chat_send_all("No destination_orientation given") end
if destination_orientation == nil then destination_orientation = orientation end
local destination_wormholePos = portal_definition.shape.get_wormholePos_from_anchorPos(destination_anchorPos, destination_orientation)
if DEBUG then minetest.chat_send_all("Destination set to " .. minetest.pos_to_string(destination_anchorPos)) end
@ -1160,7 +1160,7 @@ local function ignite_portal(ignition_pos, ignition_node_name)
if portal_definition.on_ignite ~= nil then
portal_definition.on_ignite(portal_definition, anchorPos, orientation)
end
return true
end
end
@ -1171,9 +1171,9 @@ local function ensure_remote_portal_then_teleport(player, portal_definition, loc
-- check player is still standing in a portal
local playerPos = player:get_pos()
if playerPos == nil then
if playerPos == nil then
return -- player quit the game while teleporting
end
end
playerPos.y = playerPos.y + 0.1 -- Fix some glitches at -8000
if minetest.get_node(playerPos).name ~= portal_definition.wormhole_node_name then
return -- the player has moved out of the portal
@ -1204,7 +1204,7 @@ local function ensure_remote_portal_then_teleport(player, portal_definition, loc
local destination_anchorPos = portal_definition.shape.get_anchorPos_from_wormholePos(destination_wormholePos, destination_orientation)
portal_definition.shape.disable_portal_trap(destination_anchorPos, destination_orientation)
-- if the portal is already linked to a different portal then extinguish the other portal and
-- if the portal is already linked to a different portal then extinguish the other portal and
-- update the target portal to point back at this one.
local remoteMeta = minetest.get_meta(destination_wormholePos)
local remoteTarget = minetest.string_to_pos(remoteMeta:get_string("target"))
@ -1241,12 +1241,12 @@ local function ensure_remote_portal_then_teleport(player, portal_definition, loc
end
else
-- no wormhole node at destination - destination portal either needs to be built or ignited.
-- Note: A very rare edge-case that is difficult to set up:
-- If the destination portal is unlit and its frame shares a node with a lit portal that is linked to this
-- Note: A very rare edge-case that is difficult to set up:
-- If the destination portal is unlit and its frame shares a node with a lit portal that is linked to this
-- portal (but has not been travelled through, thus not linking this portal back to it), then igniting
-- the destination portal will extinguish the portal it's touching, which will extinguish this portal
-- which will leave a confused player.
-- I don't think this is worth preventing, but I document it incase someone describes entering a portal
-- I don't think this is worth preventing, but I document it incase someone describes entering a portal
-- and then the portal turning off.
if DEBUG then minetest.chat_send_all("ensure_remote_portal_then_teleport() saw " .. dest_wormhole_node.name .. " at " .. minetest.pos_to_string(destination_wormholePos) .. " rather than a wormhole. Calling locate_or_build_portal()") end
@ -1355,7 +1355,7 @@ function run_wormhole(timerPos, time_elapsed)
local anchorPos, orientation = portal_definition.shape.get_anchorPos_and_orientation_from_p1_and_p2(p1, p2)
portal_definition.shape.apply_func_to_wormhole_nodes(anchorPos, orientation, run_wormhole_node_func)
if portal_definition.on_run_wormhole ~= nil then
if portal_definition.on_run_wormhole ~= nil then
portal_definition.on_run_wormhole(portal_definition, anchorPos, orientation)
end
@ -1479,7 +1479,7 @@ local function create_book_of_portals()
page2_text
)
if not previouslyRegistered and nether.PORTAL_BOOK_LOOT_WEIGHTING > 0 and portalCount > 0 then
if not previouslyRegistered and nether.PORTAL_BOOK_LOOT_WEIGHTING > 0 and portalCount > 0 then
add_book_as_treasure()
end
end
@ -1491,7 +1491,7 @@ function get_malleated_schematic_filename(portal_definition)
local result
if portal_definition.shape ~= nil and portal_definition.shape.schematic_filename ~= nil then
local schematicFileName = portal_definition.shape.schematic_filename
local uniqueId = portal_definition.frame_node_name .. " " .. portal_definition.wormhole_node_name
@ -1679,8 +1679,8 @@ local wormhole_nodedef_default = {
palette = "nether_portals_palette.png",
post_effect_color = {
-- post_effect_color can't be changed dynamically in Minetest like the portal colour is.
-- If you need a different post_effect_color then use register_wormhole_node() to create
-- another wormhole node with the right post_effect_color and set it as the wormhole_node_name
-- If you need a different post_effect_color then use register_wormhole_node() to create
-- another wormhole node with the right post_effect_color and set it as the wormhole_node_name
-- in your portaldef.
-- Hopefully this colour is close enough to magenta to work with the traditional magenta
-- portals, close enough to red to work for a red portal, and also close enough to red to
@ -1705,9 +1705,9 @@ local wormhole_nodedef_default = {
},
},
groups = {not_in_creative_inventory = 1},
mesecons = {receptor = {
mesecons = {receptor = {
state = "on",
rules = function(node)
rules = function(node)
return nether.get_mesecon_emission_rules_from_colorfacedir(node.param2)
end
}}
@ -1718,10 +1718,10 @@ function nether.register_wormhole_node(name, nodedef)
assert(name ~= nil, "Unable to register wormhole node: Name is nil")
assert(nodedef ~= nil, "Unable to register wormhole node ''" .. name .. "'': nodedef is nil")
for key, value in pairs(wormhole_nodedef_default) do
for key, value in pairs(wormhole_nodedef_default) do
if nodedef[key] == nil then nodedef[key] = value end
end
minetest.register_node(name, nodedef)
minetest.register_node(name, nodedef)
end
@ -1779,13 +1779,13 @@ function nether.register_portal(name, portaldef)
if portaldef.find_surface_anchorPos == nil then -- default to using find_surface_target_y()
portaldef.find_surface_anchorPos = function(pos)
local destination_pos = {x = pos.x, y = 0, z = pos.z}
local existing_portal_location, existing_portal_orientation =
local existing_portal_location, existing_portal_orientation =
nether.find_nearest_working_portal(name, destination_pos, 10, 0) -- a y_factor of 0 makes the search ignore the altitude of the portals (as long as they are outside the realm)
if existing_portal_location ~= nil then
return existing_portal_location, existing_portal_orientation
else
else
destination_pos.y = nether.find_surface_target_y(destination_pos.x, destination_pos.z, name)
return destination_pos
end
@ -1798,8 +1798,8 @@ function nether.register_portal(name, portaldef)
local p1, p2 = portaldef.shape:get_p1_and_p2_from_anchorPos(vector.new(), 0)
local existing_portaldef = get_portal_definition(portaldef.frame_node_name, p1, p2)
if existing_portaldef ~= nil then
minetest.log("error",
portaldef.mod_name .." tried to register a portal '" .. portaldef.name .. "' made of " .. portaldef.frame_node_name ..
minetest.log("error",
portaldef.mod_name .." tried to register a portal '" .. portaldef.name .. "' made of " .. portaldef.frame_node_name ..
", but it is the same material and shape as the portal '" .. existing_portaldef.name .. "' already registered by " .. existing_portaldef.mod_name ..
". Edit the values one of those mods uses in its call to nether.register_portal() if you wish to resolve this clash.")
else
@ -1865,7 +1865,7 @@ function nether.register_portal_ignition_item(item_name, ignition_failure_sound)
end
-- use this when determining where to spawn a portal, to avoid overwriting player builds
-- It checks the area for any nodes that aren't ground or trees.
-- It checks the area for any nodes that aren't ground or trees.
-- (Water also fails this test, unless it is unemerged)
function nether.volume_is_natural(minp, maxp)
local c_air = minetest.get_content_id("air")
@ -1909,7 +1909,7 @@ end
-- portal_name is optional, providing it allows existing portals on the surface to be reused.
function nether.find_surface_target_y(target_x, target_z, portal_name)
-- default to starting the search at -16 (probably underground) if we don't know the
-- default to starting the search at -16 (probably underground) if we don't know the
-- surface, like paramat's original code from before get_spawn_level() was available:
-- https://github.com/minetest-mods/nether/issues/5#issuecomment-506983676
local start_y = -16
@ -1917,16 +1917,16 @@ function nether.find_surface_target_y(target_x, target_z, portal_name)
-- try to spawn on surface first
if minetest.get_spawn_level ~= nil then -- older versions of Minetest don't have this
local surface_level = minetest.get_spawn_level(target_x, target_z)
if surface_level ~= nil then -- test this since get_spawn_level() can return nil over water or steep/high terrain
if surface_level ~= nil then -- test this since get_spawn_level() can return nil over water or steep/high terrain
-- get_spawn_level() tends to err on the side of caution and spawns the player a
-- block higher than the ground level. The implementation is mapgen specific
-- get_spawn_level() tends to err on the side of caution and spawns the player a
-- block higher than the ground level. The implementation is mapgen specific
-- and -2 seems to be the right correction for v6, v5, carpathian, valleys, and flat,
-- but v7 only needs -1.
-- Perhaps this was not always the case, and -2 may be too much in older versions
-- of minetest, but half-buried portals are perferable to floating ones, and they
-- Perhaps this was not always the case, and -2 may be too much in older versions
-- of minetest, but half-buried portals are perferable to floating ones, and they
-- will clear a suitable hole around themselves.
if minetest.get_mapgen_setting("mg_name") == "v7" then
if minetest.get_mapgen_setting("mg_name") == "v7" then
surface_level = surface_level - 1
else
surface_level = surface_level - 2
@ -1964,19 +1964,19 @@ function nether.find_nearest_working_portal(portal_name, anchorPos, distance_lim
local portal_definition = nether.registered_portals[portal_name]
assert(portal_definition ~= nil, "find_nearest_working_portal() called with portal_name '" .. portal_name .. "', but no portal is registered with that name.")
local contenders = list_closest_portals(portal_definition, anchorPos, distance_limit, y_factor)
local contenders = list_closest_portals(portal_definition, anchorPos, distance_limit, y_factor)
-- sort by distance
local dist_list = {}
for dist, _ in pairs(contenders) do table.insert(dist_list, dist) end
table.sort(dist_list)
for _, dist in ipairs(dist_list) do
for _, dist in ipairs(dist_list) do
local portal_info = contenders[dist]
if DEBUG then minetest.chat_send_all("checking portal from mod_storage at " .. minetest.pos_to_string(portal_info.anchorPos) .. " orientation " .. portal_info.orientation) end
-- the mod_storage list of portals is unreliable - e.g. it won't know if inactive portals have been
-- the mod_storage list of portals is unreliable - e.g. it won't know if inactive portals have been
-- destroyed, so check the portal is still there
local portalFound, portalIsActive = is_portal_at_anchorPos(portal_definition, portal_info.anchorPos, portal_info.orientation, true)

48
portal_examples.lua
View File

@ -2,10 +2,10 @@
Nether mod portal examples for Minetest
These portal API examples work independently of the Nether realm
These portal API examples work independently of the Nether realm
and Nether portal. To try these examples, enable them in:
Mintest -> Settings -> All settings -> Mods -> nether
Once enabled, details on how to build them can be found in dungeon
Mintest -> Settings -> All settings -> Mods -> nether
Once enabled, details on how to build them can be found in dungeon
chests in the book of portals.
--
@ -33,10 +33,10 @@ local ENABLE_PORTAL_EXAMPLE_FLOATLANDS = false
local ENABLE_PORTAL_EXAMPLE_SURFACETRAVEL = false
-- Sets how far a Surface Portal will travel, measured in cells along the Moore curve,
-- which are about 117 nodes square each. Larger numbers will generally mean further distance
-- as-the-crow-flies, but this will not always be true due to the how the Moore curve
-- which are about 117 nodes square each. Larger numbers will generally mean further distance
-- as-the-crow-flies, but this will not always be true due to the how the Moore curve
-- frequently doubles back upon itself.
-- This doubling-back prevents the surface portal from taking players easily accross the
-- This doubling-back prevents the surface portal from taking players easily accross the
-- map - the curve is 262144 cells long!
local SURFACE_TRAVEL_DISTANCE = 26
@ -53,9 +53,9 @@ if minetest.settings:get_bool("nether_enable_portal_example_floatlands", ENABLE_
if minetest.get_mapgen_setting("mg_name") == "v7" then
local mgv7_spflags = minetest.get_mapgen_setting("mgv7_spflags")
FLOATLANDS_ENABLED = mgv7_spflags ~= nil and mgv7_spflags:find("floatlands") ~= nil and mgv7_spflags:find("nofloatlands") == nil
FLOATLAND_LEVEL = minetest.get_mapgen_setting("mgv7_floatland_level") or 1280
FLOATLAND_LEVEL = minetest.get_mapgen_setting("mgv7_floatland_level") or 1280
if FLOATLANDS_ENABLED then
if FLOATLANDS_ENABLED then
floatlands_flavortext = S("There is a floating land of hills and forests up there, over the edges of which is a perilous drop all the way back down to sea level. We have not found how far these strange pristine lands extend. I have half a mind to retire there one day.")
end
end
@ -120,7 +120,7 @@ end
-- Surface-travel portal, playable code example --
--==============================================--
-- These Moore Curve functions requred by surface_portal's find_surface_anchorPos() will
-- These Moore Curve functions requred by surface_portal's find_surface_anchorPos() will
-- be assigned later in this file.
local get_moore_distance -- will be function get_moore_distance(cell_count, x, y): integer
local get_moore_coords -- will be function get_moore_coords(cell_count, distance): pos2d
@ -147,7 +147,7 @@ if minetest.settings:get_bool("nether_enable_portal_example_surfacetravel", ENAB
These travel a distance along the ground, and even when constructed deep underground they link back up to the surface, but we were never able to predict where the matching twin portal would appear. Coudreau believes it works in epicycles, but I am not convinced.
]]),
is_within_realm = function(pos)
is_within_realm = function(pos)
-- Always return true, because these portals always just take you around the surface
-- rather than taking you to a different realm
return true
@ -162,12 +162,12 @@ if minetest.settings:get_bool("nether_enable_portal_example_surfacetravel", ENAB
find_surface_anchorPos = function(realm_anchorPos)
-- A portal definition doesn't normally need to provide a find_surface_anchorPos() function,
-- since find_surface_target_y() will be used by default, but these portals travel around the
-- surface (following a Moore curve) so will be calculating a different x and z to realm_anchorPos.
-- surface (following a Moore curve) so will be calculating a different x and z to realm_anchorPos.
local cellCount = 512
local maxDistFromOrigin = 30000 -- the world edges are at X=30927, X=−30912, Z=30927 and Z=−30912
-- clip realm_anchorPos to maxDistFromOrigin, and move the origin so that all values are positive
-- clip realm_anchorPos to maxDistFromOrigin, and move the origin so that all values are positive
local x = math.min(maxDistFromOrigin, math.max(-maxDistFromOrigin, realm_anchorPos.x)) + maxDistFromOrigin
local z = math.min(maxDistFromOrigin, math.max(-maxDistFromOrigin, realm_anchorPos.z)) + maxDistFromOrigin
@ -181,27 +181,27 @@ if minetest.settings:get_bool("nether_enable_portal_example_surfacetravel", ENAB
local search_radius = divisor / 2 - 5 -- any portal within this area will do
-- a y_factor of 0 makes the search ignore the altitude of the portals
local existing_portal_location, existing_portal_orientation =
local existing_portal_location, existing_portal_orientation =
nether.find_nearest_working_portal("surface_portal", {x = target_x, y = 0, z = target_z}, search_radius, 0)
if existing_portal_location ~= nil then
-- use the existing portal that was found near target_x, target_z
return existing_portal_location, existing_portal_orientation
else
-- find a good location for the new portal, or if that isn't possible then at
else
-- find a good location for the new portal, or if that isn't possible then at
-- least adjust the coords a little so portals don't line up in a grid
local adj_x, adj_z = 0, 0
if minetest.get_spawn_level ~= nil then -- older versions of Minetest don't have this
-- Deterministically look for a location in the cell where get_spawn_level() can give
-- us a surface height, since nether.find_surface_target_y() works *much* better when
-- Deterministically look for a location in the cell where get_spawn_level() can give
-- us a surface height, since nether.find_surface_target_y() works *much* better when
-- it can use get_spawn_level()
local prng = PcgRandom( -- seed the prng so that all portals for these Moore Curve coords will use the same random location
moore_pos.x * 65732 +
moore_pos.y * 729 +
minetest.get_mapgen_setting("seed") * 3
)
local attemptLimit = 15 -- how many attempts we'll make at finding a good location
for attempt = 1, attemptLimit do
adj_x = math.floor(prng:rand_normal_dist(-search_radius, search_radius, 2) + 0.5)
@ -212,7 +212,7 @@ if minetest.settings:get_bool("nether_enable_portal_example_surfacetravel", ENAB
end
end
end
local destination_pos = {x = target_x + adj_x, y = 0, z = target_z + adj_z}
destination_pos.y = nether.find_surface_target_y(destination_pos.x, destination_pos.z, "surface_portal")
@ -227,7 +227,7 @@ end
-- Hilbert curve and Moore curve functions --
--=========================================--
-- These are space-filling curves, used by the surface_portal example as a way to determine where
-- These are space-filling curves, used by the surface_portal example as a way to determine where
-- to place portals. https://en.wikipedia.org/wiki/Moore_curve
@ -242,7 +242,7 @@ local function hilbert_flip(cell_count, pos, flip_direction, flip_twice)
pos.x = (cell_count - 1) - pos.x;
pos.y = (cell_count - 1) - pos.y;
end
local temp_x = pos.x;
pos.x = pos.y;
pos.y = temp_x;
@ -306,7 +306,7 @@ end
-- Converts (x,y) to distance
-- A Moore curve is a variation of the Hilbert curve that has the start and
-- A Moore curve is a variation of the Hilbert curve that has the start and
-- end next to each other.
-- Top middle point is the start/end location
get_moore_distance = function(cell_count, x, y)
@ -324,7 +324,7 @@ end
-- Converts distance to (x,y)
-- A Moore curve is a variation of the Hilbert curve that has the start and
-- A Moore curve is a variation of the Hilbert curve that has the start and
-- end next to each other.
-- Top middle point is the start/end location
get_moore_coords = function(cell_count, distance)